diff --git a/src/test/fuzz/descriptor_parse.cpp b/src/test/fuzz/descriptor_parse.cpp
--- a/src/test/fuzz/descriptor_parse.cpp
+++ b/src/test/fuzz/descriptor_parse.cpp
@@ -19,6 +19,12 @@
     FlatSigningProvider signing_provider;
     std::string error;
     for (const bool require_checksum : {true, false}) {
-        Parse(descriptor, signing_provider, error, require_checksum);
+        const auto desc =
+            Parse(descriptor, signing_provider, error, require_checksum);
+        if (desc) {
+            (void)desc->ToString();
+            (void)desc->IsRange();
+            (void)desc->IsSolvable();
+        }
     }
 }